000022712 001__ 22712
000022712 005__ 20220110134522.0
000022712 04107 $$aeng
000022712 046__ $$k2018-05-14
000022712 100__ $$aBrožová, T.
000022712 24500 $$aCondensation on the outer surface of polymer hollow fiber heat exchangers and its influence to the heat transfer

000022712 24630 $$n24.$$pEngineering Mechanics 2018
000022712 260__ $$bInstitute of Theoretical and Applied Mechanics of the Cech Academy of Sciences, Prague
000022712 506__ $$arestricted
000022712 520__ $$2eng$$aCondensation influences significantly the heat transfer. Describing its mechanism is necessary for better understanding and leads to its beneficial use in applications. The contribution deals with the condensation on the outer surface of polymer hollow fibers that are made of polypropylene with outer diameter 0.8 mm. These fibers form the heat exchanger with total amount 2660 fibers that are divided into 20 equivalent layers. The wall thickness is approximately 10% of outer diameter. The testing air properties were set at 27°C and 50% relative humidity that are the typical conditions for such tests in air-conditioning technology. The study focuses on the influence of the gravity and the air speed. Therefore, the polymer hollow fibers heat exchanger (PHFHE) was placed in three different positions (vertical, horizontal, and 45°) and the air velocity were chosen as 1 m s-1 and 3 m s-1. The experiments shows that the PHFHE are able to stand up the conditions in air-conditioning applications. Moreover, they achieved the competitive results with common metal heat exchangers. The paper claims the perspective of PHFHE in air-conditioning technology.

000022712 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022712 653__ $$ahollow fiber, heat exchanger, heat transfer, condensation

000022712 7112_ $$aEngineering Mechanics 2018$$cSvratka, CZ$$d2018-05-14 / 2018-05-17$$gEM2018
000022712 720__ $$aBrožová, T.$$iBartuli, E.$$iRaudenský, M.
000022712 8560_ $$ffischerc@itam.cas.cz
000022712 8564_ $$s280534$$uhttps://invenio.itam.cas.cz/record/22712/files/117.pdf$$yOriginal version of the author's contribution in proceedings, page , section TER.
000022712 962__ $$r21225
000022712 980__ $$aPAPER